Study of (12Co–4Cr WC) and (Cr3C2–25NiCr) coatings sprayed by the HVOF process and subsequently laser remelted

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dc.contributor.authorOliveira, Ana Claudia Costa
dc.contributor.authorCarvalho, Edinelson
dc.contributor.authorDyer, Paulo
dc.contributor.authorSilva, Maria Margareth da
dc.contributor.authorVieira, Lucia
dc.contributor.authorSilveira, Carolina Hahn da
dc.contributor.authorVasconcelos, Getúlio de
dc.date.accessioned2025-06-13T18:56:10Z
dc.date.available2025-06-13T18:56:10Z
dc.date.issued22025
dc.description.abstractThe laser remelting technique on tungsten carbide (12Co–4Cr WC) and chromium carbide (Cr3 C2 –25NiCr) coatings deposited by HVOF provides improvements in surface properties, such as increased hardness and resistance to abrasive wear. This process uses a laser beam to selectively melt the coating, promoting a uniform and adherent layer. In the present work, tungsten carbide and chromium carbide alloy coatings were deposited on properly prepared SAE 1020 substrates using the high-speed oxy-fuel (HVOF) technique. After deposition, the coatings were remelted with a laser beam, varying the scanning speed and the laser beam power of the ytterbium fiber to obtain a pore- and crack-free coating and better metallurgical anchorage to the substrate. The samples were characterized by scanning electron microscopy (SEM), X-ray diffractogram, ASTM G132 Standard Test Method for Pin Abrasion Testing wear and microhardness. The results show that it was possible to obtain coatings with greater hardness after the laser remelting process, reducing pores or imperfections and metallurgically bonding to the substrate.
dc.description.physical7 p.
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade Federal de Lavras
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationInstituto de Estudos Avançados
dc.identifier.affiliationInstituto Tecnológico de Aeronáutica
dc.identifier.bibliographicCitationOLIVEIRA, A. C. C. et al.. Study of (12Co–4Cr WC) and (Cr3C2–25NiCr) coatings sprayed by the HVOF process and subsequently laser remelted. Materials Research, v. 28, p. 1-7, 2025. Disponível em: https://www.scielo.br/j/mr/a/9LKcYhqM78rL56fXB7RBWxv/?lang=en.
dc.identifier.doihttps://doi.org/10.1590/1980-5373-MR-2025-0133
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/1010
dc.language.isoen_US
dc.publisherUFSCar
dc.rights.holderMaterials Research
dc.subject.keywordWear resistance increase
dc.subject.keywordFiber laser
dc.subject.keywordRemelting coating
dc.titleStudy of (12Co–4Cr WC) and (Cr3C2–25NiCr) coatings sprayed by the HVOF process and subsequently laser remelted
dc.typeArtigos de Periódicos

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